Hi all, Forcefield/Wondermagnet has added some more magnets to their product list, which could be of interest. See: http://www.wondermagnet.com For those with a diamagnetic interest (levitation), their item #16 is especially noteworthy. Its a 1/4" diameter rod thats 1" long with a thin gold plating and has a R45 or 45 category; which means it is magnetically enhanced over a typical R30 or R35 neodymium magnet which are much more common. Frankly; it the best magnet I've ever seen in this type of experimental application, as I've levitated it in a bored hole piece of graphite and a more normal "discs" of graphite. There is one gamble with this magnet in levitation and that is that when it was originally gaussed, the uniformity can vary over the length of the magnet; and it can assume a "tilt" or slope from a horizontal plane of afew degrees (normal) and on up to some ~ 20 or more degrees. If you're interested it maybe prudent to obtain afew and go from there. This magnet is also more brittle than a standard magnet, and it should be handled with care to prevent unintended collision with other metallic objects. The magnetization is 1/2 the diameter lengthwise, or, in other words it floats horizontally in a levitation stand. (The poles are not per a normal magnet, with the N on one end and S on the other). This magnet would NOT be good for normal seismographic coil induction, as the field mostly cancels out because of its pole arrangement. This magnets magnetic enhancement significantly aids diamagnetic levitation and much better stability than a normal production neodymium magnet. This message is simply a information referral to the item/s on hand, and I do not share a commercial interest therein. Common magnet propertys and application interests....yes. Take care, Meredith Lamb __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>